How to Use Elevation Slope Calculator
The Elevation Slope Calculator is purpose-built for site planning, drainage and outdoor design.
- Pick a unit — m or ft.
- Enter horizontal run — Plan-view distance between two points.
- Enter vertical rise — Difference in elevation; negative for descent.
- Read the result — Slope percent, slope ratio, slope angle (°) and slope distance.
Formula & Theory — Elevation Slope Calculator
The Elevation Slope Calculator combines elementary trig with civil conventions:
slope (decimal) = rise / run
slope % = 100 × rise / run
slope ratio = 1 : (run / rise)
slope angle = arctan(rise / run)
slope distance = √(rise² + run²)| Symbol | Meaning |
|---|---|
| rise | Vertical elevation difference |
| run | Horizontal distance |
| slope% | Slope expressed as a percentage |
Why three formats matter
Government codes specify minimum and maximum slopes in different formats: ADA ramps in ratio (1:12), road grades in percent (%) and ski runs in degrees. Cross-converting them is a daily task in civil and landscape work.
Use Cases for Elevation Slope Calculator
- Drainage design — Verify that lawn and parking lot slopes meet code minimums.
- ADA / accessibility — Confirm ramp slope of 1:12 or shallower.
- Trail building — Ensure sustainable trail grades for hiking and biking.
- Roof and gutter design — Translate percent grade to roofing pitch ratios.
- Roadway alignment — Combine with sight-distance checks during preliminary design.
- Education — Demonstrate that rise / run is just a tangent in disguise.
The Elevation Slope Calculator is the everyday tool that keeps these conversions accurate.